Publication:
Coherent radiation from a chain of charged particles on a circular orbit around a dielectric ball

Файлы
W4316114056.pdf(521.44 KB)
Дата
2023
Авторы
Grigoryan, L. S.
Mkrtchyan, A. H.
Dabagov, S. B.
Saharian, A. A.
Journal Title
Journal ISSN
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Издатель
Научные группы
Организационные подразделения
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Организационная единица
Институт нанотехнологий в электронике, спинтронике и фотонике
Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе. ​Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.​
Выпуск журнала
Аннотация
We investigate the spectral and angular distribution of the electromagnetic radiation from a chain of relativistic charged particles uniformly rotating along equatorial orbit around a dielectric ball. It is shown that, for weak absorption in the ball material and under relatively mild conditions on the distribution of the particles, the radiation intensity at specific rotation frequencies is essentially stronger than the corresponding radiation for a chain circulating in free space or in a homogeneous transparent medium with the same dielectric constant as that for the ball. We determine the values of parameters of the problem for which the charges in the chain emit coherently and the radiation intensity on a given harmonic increases in proportion to the square of the number of emitting charges. We also show that relative shifts in the particles locations up to 10% do not destroy the coherence properties of the radiation. It is demonstrated that the coherence effects may also dominate in the radiation intensity for chains with non-equidistant distributions of particles. The numerical results obtained for different dielectric balls have revealed the emitted radiation to be in the GHz/THz frequency ranges. The high-power radiation from the chain is confined near the rotation plane within the angular region determined by the Cherenkov angle for the velocity of the chain image on the ball surface. In the special case of an equidistant distribution of charged particles along the orbit the results of the present paper for angle integrated frequency distribution of the radiation are in agreement with those previously obtained by our group. We argue that similar coherence effects will be present in the radiation from a chain of bunches circulating around the ball.
Описание
Ключевые слова
Equidistant , Coherent Radiation , Circular orbit , Radiant intensity , Transition radiation , Electromagnetic Transparency , Radiation properties , Particle radiation
Цитирование
Coherent radiation from a chain of charged particles on a circular orbit around a dielectric ball / Grigoryan, L. S. [et al.] // Radiation Physics and Chemistry. - 2023. - 206. - 10.1016/j.radphyschem.2023.110791
URI
https://www.doi.org/10.1016/j.radphyschem.2023.110791
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85146434202&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000960132100001
 https://openrepository.mephi.ru/handle/123456789/29915
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